The paper provides a detailed introduction of the design and fulfillment of some pivotal modules like software download module , main board and spare board synchronize module and several other modules 本文詳細介紹了其中的關鍵模塊? ?軟件下載模塊和主備同步模塊的設計和實現(xiàn),并對其它模塊也進行了簡單的闡述。